Controlled temperature measurement integration device of miniature loudspeaker and method thereof

A technology of miniature loudspeaker and integrated device, applied in measurement devices, electrical devices, instruments, etc., can solve the problems of inaccurate coil temperature, sound quality degradation, temperature inaccuracy, etc., and achieve the effect of reducing speaker distortion and even permanent damage.

Pending Publication Date: 2018-02-16
SHANGHAI FOURSEMI SEMICON CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the existing technology uses resistance to obtain the temperature of the voice coil to increase the authenticity of the obtained temperature, the instantaneous temperature measured by the sensor will still contain noise, resulting in the obtained coil temperature is still inaccurate; and the temperature is a long-term change process, If only the instantaneous physical quantity is obtained to obtain the temperature, the obtained temperature is inaccurate
Furthermore, every measurement of resistance will inevitably lead to current loss, so the sound quality restored by the speaker will still be reduced

Method used

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  • Controlled temperature measurement integration device of miniature loudspeaker and method thereof
  • Controlled temperature measurement integration device of miniature loudspeaker and method thereof
  • Controlled temperature measurement integration device of miniature loudspeaker and method thereof

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Embodiment Construction

[0018] In order to make the purpose, technical features and advantages of the present invention more understandable to those in the relevant technical field, and to implement the present invention, the technical features and implementation modes of the present invention are specifically explained in conjunction with the attached drawings, and listed The preferred embodiment is further described. The diagrams compared below are intended to express the schematic representations related to the features of the present invention, and are not and need not be completely drawn according to the actual situation. The description about the implementation of this case involves technical content well known to those skilled in the art, and will not be stated again.

[0019] Please refer to figure 2 , figure 2 It shows a circuit block diagram of a control temperature measurement integrated device C. like figure 2 As shown, the integrated control and temperature measuring device C is c...

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Abstract

A controlled temperature measurement integration device comprises a filter, an adder, a power amplifier, an extracting resistor, a current and voltage filter, a current and voltage integrator and a mathematical logical unit. The filter receives an input signal and forms an output signal. The adder forms an adding signal. Through extraction by the extracting resistor, an extracting signal is formedfor transmitting a sound signal by the miniature loudspeaker, and furthermore a coil thermal voltage signal is formed. The current filter acquires a current-filtered signal from the extracted signal.The voltage filter acquires a voltage-filtered signal from the coil thermal voltage signal. Through integration and operation of the current-filtered signal and the voltage-filtered signal, a temperature signal is acquired.

Description

technical field [0001] The present invention provides a device and method for controlling and measuring temperature of a micro-speaker, especially a device and method for integrating control and temperature measurement of a micro-speaker by using an integrated circuit. Background technique [0002] A micro-speaker usually refers to a speaker set in a portable device, the size is within 15mm*15mm, and the output power is less than 2 watts. Micro-speakers can be used in electronic products such as mobile phones, notebook computers, or personal digital assistants. Please refer to figure 1 , figure 1 is a schematic diagram of a micro-speaker in the prior art, and the speaker device S is generally composed of a coil 100 , a magnet 200 , a speaker 300 and a diaphragm 400 . figure 1 It adopts a card coordinate system, and the three axes of XYZ are as follows: figure 1 As shown, the origin of the coordinate axis is positioned at a certain corner of the horn device for easy posit...

Claims

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Application Information

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IPC IPC(8): G01K7/00
CPCG01K7/00
Inventor 丁学欣刘伟吉徐剑章林刘晓蕾江应顺神芳抗
Owner SHANGHAI FOURSEMI SEMICON CO LTD
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